Invoicing international clients in multiple currencies

The moment you start working with clients outside your home country, an invisible third party joins every transaction: the currency conversion. Done well, it's a non-event. Done poorly, it can shave 3-5% off every payment — sometimes more than your margin on the work itself.

First decision: which currency to invoice in

There's no universal right answer, but there is a clear framework:

• Invoice in your home currency when your costs (rent, software, taxes) are in that currency. You eliminate FX risk on your side and push it to the client.
• Invoice in the client's currency when you want to win the deal and make the price feel familiar to them. You absorb the FX risk yourself.
• Invoice in USD or EUR as a neutral middle ground when neither party uses each other's currency. Common in agency work across emerging markets.

Lock the exchange rate, or don't

Long projects — anything over 30 days — are exposed to FX movement between contract signing and final payment. If you agreed a fee in EUR but invoice in USD three months later, the rate has almost certainly shifted by 1-3%. Two ways to handle this:

• Fix the rate in the contract. "Fees are denominated in EUR; invoices issued in USD will use the ECB reference rate on the invoice date." This is fair and predictable.
• Add a small FX buffer to your price. Quote 2-3% above the spot rate when you sign. You absorb minor movements; large ones you renegotiate.

The bank fee problem

Traditional banks make money on cross-border payments in three layers, most of which they don't show on the wire:

• The wire fee — usually $15-45, clearly itemised.
• The intermediary bank fee — $10-30 deducted somewhere in the middle of the SWIFT route.
• The FX spread — the difference between the mid-market rate and the rate the bank actually uses, typically 1-3%.

The third one is the biggest. On a $5,000 invoice, a 2% spread is $100 you'll never see.

What actually works in 2026

Multi-currency accounts from Wise, Revolut Business, Mercury, or local equivalents let you receive in the client's currency and convert at near-mid-market rates. The total fee on a typical cross-border payment drops from 3-5% to 0.4-0.7%. For freelancers and small studios, this is the single biggest improvement you can make to international margin.

Showing the right details on the invoice

• State the currency clearly on every amount: USD 1,200.00, not $1,200 (which is ambiguous between USD, CAD, AUD, MXN, etc.).
• Include both your local bank account and a multi-currency account for the relevant currency. Let the client pick the cheaper one for them.
• If you offer payment in two currencies, name the rate and the date the rate was sourced.
• Include your IBAN, SWIFT/BIC, and the bank's full address — incomplete details are the #1 cause of stuck international wires.

VAT and sales tax on cross-border invoices

The rules vary by jurisdiction, but the rough pattern is: if you're selling services to a business in another tax region, you usually don't charge your local VAT (the reverse charge applies and the client accounts for it on their side). If you're selling to a consumer abroad, you often docharge VAT, and possibly at their local rate. The detail matters — talk to an accountant who knows your home country's export rules before you assume.

The simplest setup

For most freelancers working internationally, the working recipe is: open a multi-currency account, invoice in the client's currency, include both bank options on the invoice, and convert to your home currency in batches when the rate is favourable. AetherInvoice supports multi-currency line items and automatic currency symbol formatting for exactly this workflow.